Mathematics - 14 September 2007

...................... i need a fraction answer please

2007-09-14 11:04:52 · 8 answers · asked by Anonymous

2007-09-14 11:04:36 · 9 answers · asked by loppy 2

Find the area of ONE loop of the graph of the polar function

r = 4cos3Ө

Area = 1/2 INT Ө1 --> Ө2 r^2 dӨ

PLEASE SHOW WORK! Including what the integral begins and goes until.

I can't figure out the limits of the integral... I have no idea where to start and stop to get just ONE loop!

2007-09-14 11:00:37 · 2 answers · asked by Anonymous

explain clearly on how to solve???
use the variable N???....

1)The sum of two numbers is 18.If the larger number is twice the smaller number find the two numbers...
small no.= x so smaller number is 18???
bigger no= 2x-18 bigger number 12???
solution?
x+2x-18=18
3x+18+18 x=12 18-12=6 6x3+18???x=18
3x/3+36/3
is this right or what??

2) One number is one more than 3 times the smaller number.Their sum is 69.Find the numbers.haha still use the small...bigger representation like mine.(cant understand this?!!)

3)The larger of 2 no. is 12 more than half the smaller number find their number if their sum is 30.

4)Find 2 numbers whose sum is 31,one of which is 5 less than twice the other.

sorry if it's to many i just cant understand word problems...
good luck and have a nice day

2007-09-14 10:51:43 · 3 answers · asked by aveecd 1

x + 2y = 8

2007-09-14 10:40:45 · 10 answers · asked by antwon 1

r = 2(1-cosӨ)

Find the arc length of the polar curve ^ from 0 to п (pi)

formula for Arc Length = INT 0 --> п (pi) [f'(Ө)^2 + f(Ө)^2]^1/2 *dӨ

PLEASE show work! I keep getting back to the original problem. HELP!

2007-09-14 10:37:08 · 2 answers · asked by Anonymous

what is the inverse of the square root of 6 minus e^(2x)?
(6-e^(2x))^.5 if you're confused of how to format that. This was my incorrect course of action:

1. replace x with y. x = sq. root (6-e^(2y)
2. square each side. x^2 = 6-e^(2y)
3. subtract 6 from each side. x^2-6 = -e^(2y)
4. multiply each side by -1. 6-x^2= e^(2y)
5. mutiply each side by the natural logarithm. ln (6-x^2) = ln e^2y
6. Isolate y. [ln(6-x^2)]/2=y

That made sense to me but doesn't work when you graph it.

2007-09-14 10:34:47 · 2 answers · asked by ILuvTaraReid 2

what is 22% of 5?
Do I change 22% to .22?

2007-09-14 10:30:52 · 15 answers · asked by Anonymous

please tell me how you did it and the name of the procedure or theorem

2007-09-14 10:29:05 · 2 answers · asked by nico 2

What is 40 / 4 + 6 * 4 – 2

2007-09-14 10:27:51 · 5 answers · asked by Anonymous

2x + y = 4
x + y = 3

2007-09-14 10:26:24 · 4 answers · asked by antwon 1

A factory has 3 machines capable of producing cogs. All 3 machines together can produce 460 cogs per hour. Machine A and machine B together produce 360 cogs per hour, while machine A and machine C together can produce 310 cogs per hour. How many cogs per hour can machine A produce?

2007-09-14 10:21:53 · 3 answers · asked by Anonymous

2007-09-14 10:19:04 · 5 answers · asked by doodee889 1

2007-09-14 10:16:11 · 11 answers · asked by Anonymous

2007-09-14 10:10:42 · 3 answers · asked by Anonymous

e^(ax) = Ce^(bx), where a is not equal to b. Solve for X. Can someone please help me with this? There are some real smart people on here, so if you are able to answer this question, thanks SOO much. I am in awe of your brilliance.

2007-09-14 10:08:50 · 5 answers · asked by ILuvTaraReid 2

Your plan on going golfing this weekend with a friend. You can either go to your favorite course which is 14 miles north of your house or your friend's favorite course which is 14 miles south of your house. Write an absolute value inequality that represents all the distances you may be from your house.

2007-09-14 10:03:24 · 3 answers · asked by kelly c 1

please help me:
1.what is the smallest natural number 54 must be multiplied by so that the result is a perfect square? (hint: write the prime factor of 54 first) show your work.

2.find the smallest natural number that 94 must be multiplied by so that the number created is divisible by 12. Show your work.

3. If the GCF and the LCM of two numbers are 15 and 600 respectively and one of the numbers is 75, find the other number. Show your work.

2007-09-14 09:59:51 · 5 answers · asked by rain+sunshine=rainbow 1

3x^2-13x=2x
Please show me how to solve this function numerically and algebraically.

2007-09-14 09:56:30 · 5 answers · asked by w_xsoadx_w 2

I am taking physics and I am having trouble with the vector section. I am mostly having trouble with sin, cos, and tan. I did not take trigonometry so this might be why I don't know what to do with these terms. How do you find the sin or cos of an angle for example cos of a 25 degree angle and sin of a 25 degree angle. I did it in the calculator using the cos and sin buttons and then putting 25 in parenthesis but it gives me a different answer than the book. Can anyone explain clearly for a beginner?

2007-09-14 09:53:15 · 4 answers · asked by Anonymous

(a) y = –3x + 4

(b) y = 3x + 4

(c) y = 1/3x + 4

(d) y = –3x + 5

2007-09-14 09:51:24 · 4 answers · asked by Anonymous

2007-09-14 09:47:53 · 4 answers · asked by Anonymous

I need good, long linear and nonlinear questions that form some kind of picture. I don't mean individual equations making their own individual pictures. I mean five equations that form their own lines to come together to make a picture.

Think you could help?

2007-09-14 09:39:10 · 2 answers · asked by Anonymous

two taps A and B can fill a water tank in 9 minutes and 12 minutes. In what time the tank will be full, if B starts working 2 minutes after A starts working?

2007-09-14 09:36:59 · 1 answers · asked by swarnalatha v 1

what is 5+5??

2007-09-14 09:31:45 · 7 answers · asked by Anonymous

if 2log(x-2y)=log x+log y, evaluate x/y

2) Let f(x)=2x-1 and g(x) = ½ x +3 determine
(f-1 ◦ g) (x)
(g-1 ◦ f-1) (x)

f is raised to the power -1 not minus one

Thank you soooo much

2007-09-14 09:29:37 · 3 answers · asked by tx_bsn_2008 2

ok now I'm in grade 8 and my math teacher has given use an assinment that I really want to do great in... but i'm stuck and in total I have 50 but I need 100 to pass so if you could help me out with the answers well I try to get them it would be great and the twist is you can only use the numbers 1,4,8 and 9 hope you can help just give me any answer and if I have then I have it and if I don't then you rule and are a savour

2007-09-14 09:28:57 · 3 answers · asked by kelly w 1

This question is on my sons science test...and I don't have a clue....

2007-09-14 09:19:04 · 5 answers · asked by misstigeress 4

√5-√3, 4, √5+√3

2007-09-14 09:13:30 · 2 answers · asked by CelticMoonGoddess 2

The proportion is: (15/x+2)=(3/5). Solve for X.

Please include the step-by-step procedures too.

2007-09-14 09:10:21 · 4 answers · asked by dana c 1